Archaeological site of Augustóbriga, archaeological site in Muro de Ágreda, Soria, Spain

Augustóbriga is a Roman city site on flat ground beneath the present village of Muro de Ágreda, in the municipality of Ólvega, Soria. Excavations have traced its wall, provisionally dated to the 1st century AD, and the Roman road from Caesaraugusta to Asturica ran beside it. The Celtiberian town of Arekorataz lies below the Roman levels.

Arekorataz was a Celtiberian town known from the Luzaga bronze and its own coinage, among the first Celtiberian mints. Around 33-34 BC Octavian founded the Roman city Augustóbriga on the site, a supply base on the Caesaraugusta–Asturica road. Its walls are dated provisionally to the 1st century AD; the town was probably destroyed by fire in the barbarian incursions, and Muro de Ágreda later took its name from the ruins of those walls.

The name Augustóbriga comes from the Roman Emperor Augustus, who gave the town its formal identity. The ruins show how different peoples met here and left their marks, from the Celtiberians to the Romans who later arrived.

The Roman walls, provisionally dated to the 1st century AD, lie on flat ground at Muro de Ágreda, in the municipality of Ólvega, Soria. The Roman road from Caesaraugusta to Asturica passed beside them, and the modern village stands directly over the ancient city, so remains appear within the built-up area. Access is by road from Ólvega.

The Celtiberian city beneath the Roman one was called Arekorataz, and it minted coins with the legend Areicoraticos in the first half of the 2nd century BC, making it one of the first Celtiberian mints alongside Segeda. The bronze of Luzaga names its inhabitants, the ArekoraTikuBos.